Speaker
Description
The ALICE experiment has significantly upgraded its detectors. It will make possible to perform new measurements in the Ultra Peripheral Collisions (UPCs) of lead nuclei for the integrated luminosity of $\mathcal{L}^{\rm Pb-Pb}=13$/nb during Run 3 and Run 4. For Run 5 and beyond, a completely new next-generation heavy-ion experiment ALICE 3 is proposed. The new detector system will cover
much larger pseudorapidity range $\Delta \eta \sim 8$ and reach very low $p_{\rm T} \sim 10$ MeV/$c$. The target integrated luminosity in Run 5 and beyond is $\mathcal{L}^{\rm Pb-Pb}=35$/nb. In this presentation, we will focus on prospects for measurements of the light-by-light scattering at low invariant masses below $M_{\rm inv}<5$ GeV/$c^2$ and $\tau$ pair production in UPCs sensitive to the $\tau$ anomalous magnetic moment. Both processes are sensitive to physics beyond the Standard Model, in particular, light-by-light scattering measurements can be used to set new upper limits in axion-like particles searches. Perspectives of vector meson photoproduction measurements which allow for gluon distribution function constraints will be also presented.
